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EntityQ4222236· pop 5· linked from 223 articles

Also known as agent T, 2,2′-bis(2-chloroethylthio)diethyl ether, bis(2-chloroethylthioethyl)ether

O-mustard (T) is a vesicant chemical weapon, a type of mustard gas, with around three times the toxicity of the original sulfur mustard. It was developed in England in the 1930s as a thickener for mustard gas to make it more persistent when used in warm climates. A mixture of 60% sulfur mustard and 40% O-mustard also has a lower freezing point than pure sulfur mustard, and was given the code name HT. O-mustard is a Schedule I substance under the Chemical Weapons Convention.

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{{Chembox | Name = O-mustard | ImageFile = O-Mustard.svg | ImageSize = 250px | PIN = 1-Chloro-2-[(2-{2-[(2-chloroethyl)sulfanyl]ethoxy}ethyl)sulfanyl]ethane | OtherNames = Bis[2-(2-chloroethylsulfanyl)ethyl] ether | Section1 = | Section2 = | Section3 = }}

O-mustard (T) is a vesicant chemical weapon, a type of mustard gas, with around three times the toxicity of the original sulfur mustard. It was developed in England in the 1930s as a thickener for mustard gas to make it more persistent when used in warm climates. A mixture of 60% sulfur mustard and 40% O-mustard also has a lower freezing point than pure sulfur mustard, and was given the code name HT. O-mustard is a Schedule I substance under the Chemical Weapons Convention.

Excerpted from Wikipedia’s “O-mustard” article, available under the CC BY-SA 4.0 licence.

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